“The concert hall is wholly funded by Rezenke city council,” says UBS’s director, Edmunds Zazerkis, who had a budget of 12.8 million Latvian lats (£15.21m), “[and] a left/right system of V-Series loudspeakers, with the d&b 10S for fill duties, made for a very affordable package.

“More importantly, the precise constant directivity of the V-Series, with the V-SUBs flown above the main line array, gave us absolute pattern control down into the lower frequencies.”